Blockchain-based subjective and objective collaborative cloud service trust management method and system

Abstract

The invention discloses a subjective and objective collaborative cloud service trust management method and system based on a block chain. A blockchain is used as a trust manager, subjectivity and objectivity index parameters are autonomously weighted according to different needs under the coordination control of a dual-function mechanism of trust evaluation and trust detection; meanwhile, a credit mark is introduced, updating is continuously performed during trust detection, and the credit mark is taken as an important index during trust evaluation; An insurance incentive mechanism is established during trust detection, the insurance is purchased from the CSP to excite the enthusiasm of the CSP and the user, the rights and interests of the user who has purchased the insurance are guaranteed by punishing the default CSP, and any operation such as trust detection and trust evaluation is open and transparent, has time sequence and cannot be tampered; and decentralized subjective and objective collaborative systematic constraint and control which is open and transparent, traceable and anti-repudiation for CSP service behaviors are realized.

Description

technical field [0001] The invention belongs to the technical field of cloud computing, and in particular relates to a blockchain-based subjective and objective collaborative cloud service trust management method and system. Background technique [0002] Blockchain is a chain-like data structure, which is essentially a non-tamperable, open, transparent, and traceable collectively maintained shared distributed database. It is also a distributed data storage, P2P network, consensus algorithm, encryption algorithm, etc. A new computing paradigm fused by a variety of computer technologies, in which the blocks are connected in series through hash fingerprints, and each block contains a batch of network transaction information that has been agreed and verified by a consensus mechanism , can also use smart contracts for application development, and operate and use data in the form of transactions, which is a truly decentralized new application model and distributed infrastructure. ...

AI Technical Summary

Problems solved by technology

[0003] Cloud computing services usually provide general-purpose online business applications accessed through browsers, while software and data are stored on servers. In today's era of prosperous network and computing resources, there are infinitely diverse and diverse computing services for users to choose from all the time. , but the rich and diverse supply has also increased users' concerns about matching and credibility. For this reason, traditional trust evaluation, security access control and other solution mechanisms have appeared, but these solutions are only for the cloud service provider (Cloud Service Provider) beforehand. Provider (referred to as CSP) is a quality of service (Quality of Service, abbreviated as QoS) evaluation, which simply serves as a screening function, without systematic constraints and control on CSP service behavior, let alone protection of user rights; in addition, Since the traditional CSP trust management model has the inherent characteristics of information asymmetry and invisible behavior, it still has the disadvantages of high risk of information leakage and operational behavior that can be forged and denied. Therefore, we propose a blockchain technology-based Cloud service trust management model based on subjective and objective collaboration

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